Dynamic localization and Coulomb blockade in quantum dots under AC pumping

TL;DR

This paper investigates how AC pumping influences conductance in quantum dots under Coulomb blockade, revealing that dynamic localization can alter peak shapes, serving as an experimental signature of this quantum effect.

Contribution

It introduces the concept that dynamic localization affects Coulomb blockade peak shapes, providing a new way to detect this phenomenon experimentally.

Findings

Dynamic localization impacts conductance peak shapes.

Heating and cooling balance determines the stationary state.

Altered peak shapes serve as signatures of dynamic localization.

Abstract

We study conductance through a quantum dot under Coulomb blockade conditions in the presence of an external periodic perturbation. The stationary state is determined by the balance between the heating of the dot electrons by the perturbation and cooling by electron exchange with the cold contacts. We show that Coulomb blockade peak can have a peculiar shape if heating is affected by dynamic localization, which can be an experimental signature of this effect.